Function outputGrades

Member function outputGrades (lines 140–165) uses nested counter-controlled for statements to output values of the array grades, in addition to each student’s semester average. The output in Fig. 7.21 shows the result, which resembles the tabular format of a professor’s physical grade book. Lines 146–147 print the column headings for each test. We use a counter-controlled for statement so that we can identify each test with a number. Similarly, the for statement in lines 152–164 first outputs a row label using a counter variable to identify each student (line 154). Although array indices start at 0, lines 147 and 154 output test + 1 and student + 1, respectively, to produce test and student numbers starting at 1 (see Fig. 7.21). The inner for statement in lines 157–158 uses the outer for statement’s counter variable student to loop through a specific row of array grades and output each student’s test grade. Finally, line 162 obtains each student’s semester average by passing the current row of grades (i.e., grades[student]) to member function getAverage.